The game is good. At least the single player part. It has interesting characters, decent story, and tons of sidequests that will keep you occupied for hundreds of hours. I play a stealth/poison rogue with daggers, and it's a lot of fun. I'm able do deal massive damage very quickly and then return to the shadows
The cons are that the game has a lot of dialogue/lore, clumsy menus/crafting system, and can feel a bit repetitive after you've passed the 50 hour mark. Then again - what game doesn't?
I haven't done multiplayer, but it feels gimmicky from what I've seen of it.